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Cornerstone · Grades 3–5 Keystones #1 1 April 2020 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 1 April 2020 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 5⁄10 + 4⁄10

    Answer: 9⁄10
  2. 2. Algebra Two-step equations

    Solve: 3x + 6 = 18

    Answer: x = 4
  3. 3. Geometry Pythagoras — hypotenuse

    Find the hypotenuse of a right triangle with sides 15cm and 20cm

    Answer: 25cm
  4. 4. Ratio Sharing in a ratio

    Divide 198 in the ratio 3:4:2

    Answer: 66, 88 and 44
  5. 5. Statistics Mean

    Calculate the mean of: 42, 8, 11, 22, 7, 29, 17, 10

    Answer: 18.3

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